Scaling relations for sound scattering by a lattice of hard inclusions in a soft mediuma).
| Autor: | Sharma GS; School of Mechanical and Manufacturing Engineering, UNSW Sydney, New South Wales, Australia., Skvortsov A; Platforms Division, Defence Science and Technology Group, Melbourne, Australia., MacGillivray I; Platforms Division, Defence Science and Technology Group, Melbourne, Australia., Kessissoglou N; School of Mechanical and Manufacturing Engineering, UNSW Sydney, New South Wales, Australia. |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | The Journal of the Acoustical Society of America [J Acoust Soc Am] 2023 Jul 01; Vol. 154 (1), pp. 108-114. |
| DOI: | 10.1121/10.0019939 |
| Abstrakt: | Soft elastic materials embedded with resonant inclusions are widely used as acoustic coatings for maritime applications. A versatile analytical framework for resonance scattering of sound waves in a soft material by a lattice of hard inclusions of complex shape is presented. Analogies from hydrodynamics and electrostatics are employed to derive universal scaling relations for a small number of well-known lumped parameters that map resonant scattering of a complex-shaped hard inclusion to that of a sphere. Multiple scattering of waves between inclusions in proximity is also considered. The problem is then treated using an effective medium theory, viz, a layer of hard inclusions is modeled as a homogenized layer with some effective properties. The acoustic performance of hard inclusions for a range of shapes with spheres of the same volume are compared. Results obtained using this approach are in good agreement with finite element simulations. (© 2023 Acoustical Society of America All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).) |
| Databáze: | MEDLINE |
| Externí odkaz: |
|